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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>homework2</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        a{
            text-decoration: none;
        }
    </style>
</head>
<body>
    <center>
    <h1><a href="./html/layout1.html">layout1</a></h1>
    <h1><a href="./html/layout2.html">layout2</a></h1>
    <h1><a href="./html/layout3.html">layout3</a></h1>
    <h1><a href="./html/layout4.html">layout4</a></h1>
    <h1><a href="./html/layout5.html">layout5</a></h1>
    </center>
</body>
</html>